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The Nordic region, primarily Sweden and
Finland, is a relatively small geographical
area and certainly does not have a huge
population, but companies headquartered
there, with global manufacturing and supply
chains, are immensely important to modern day
mining. Through acquisition and organic growth,
both Atlas Copco and Sandvik are now very
important players in the exploration field and
that sector is also represented by companies
such as SkyTEM, Kati, Devico, Arctic Drilling and
ABEM Instrument.
Sandvik (with a presence in every sector
mentioned here) and Atlas Copco (now
incorporating GIA) are also of course dominant
players in underground hard rock trackless
equipment, with Sandvik also a significant
supplier to underground coal mines. In the
trackless sector there are also key specialist
vehicle suppliers like Veekmas, Normet and
Contector. And Nordic Lights and Finnradiator
supply equipment for many such units. The two
big players are also important suppliers of rock
tools, and then there are Robit and Driconeq, for
example, with KVX offering a wide range of
ground engaging tools. Innovative drills are the
speciality of Wassara.
On surface in open-pits and for long-distance
ore haulage, Scania is expanding its presence in
mining. Volvo Construction Equipment is a major
supplier of ADTs, wheel loaders and more, and
Volvo Penta engines are widely used underground.
Two of today’s biggest mineral processing
suppliers are headquartered in Finland –
Outotec (incorporating Larox) and Metso.
Companies like Kopar and Minpro International
are also important.
Automation is another field of leadership and
at MassMin this year ABB’s Stefan Sjöström,
Process Automation/Mining and Kjell Carlsten,
Regional Sales Manager, presented the paper
Mobile integration - the future of optimised
underground mining, resource utilisation and
logistics. In this, they considered future mines
that will employ “fewer workers for manual jobs
and more qualified operator experts for product
and process optimisation, maintenance planning
and environmental control.
“The operator experts will need to interact
with each other to cover the complete value
chain. The central mine control room would be
the target and future solution. It is expected that
the operator experts would be able to control
perhaps several mines. Sensors and automated
systems provide mine operators with real time,
essential information for each product and
process control. Future mining will require a
high degree of integration in product and
process optimisation, maintenance planning,
environmental control, etc.; all from the central
mine control centre.”
In this way, mines will be able to optimise the
utilisation of underground equipment and
increase mine productivity, while reducing
energy consumption. ABB’s underground mining
offers the possibility to integrate real time data
from different types and manufacturers of
underground equipment into ABB’s open
Process Control System 800xA. This allows for
better visualisation and utilisation of the
equipment fleet, including tracking machine
locations and their status, actual operating
environments underground, etc. “This will allow
the operator experts to make the right decisions
to keep production flow as smooth as possible.”
This paper shows the potential in mobile
integration and also provides an existing
example where Atlas Copco machines have been
integrated into the 800xA system.
In July, Atlas Copco celebrated the sale of its
100th Scooptram ST7 LHD, with Vostok-Metall
Trans of Kazakhstan placing the order for the
world’s 100th machine. The LHD will be used for
contract underground development work at
Ridder-Sokolnyi, which is a gold mine operated
by Kazzinc, located in East Kazakhstan.
The ST7 journey began at the field test stage
when Sweden’s Lovisa mine gave it “top marks
for productivity, serviceability and comfort,
reporting dramatic improvements in loading
operations as well as the operator’s
underground working environment.” The
German industrial minerals group, Geomin
Erzgebirgische Kalkwerke, became the first in
Germany to introduce the Scooptram ST7 at its
white marble mine in Hermsdorf near the Czech
border, recently reported by IM. Service
intervals are longer than for older generation
LHDs at the mine, and fewer spare parts are
needed due to improved parts wear. The vehicle
features an air conditioned cab, lower noise
levels, improved lighting and more efficient
emergency/alarm systems. It also has excellent
traction control which is easy on the tyres,
meaning fewer tyre changes or longer tyre life.
The on-board computer calculates the optimum
power needed at any one time during
operations, resulting in lower fuel consumption
and lower emissions, compared with operating
on full throttle for most of the time.
At the end of August, HighGrade reported on
44 International Mining | OCTOBER 2012
NORDIC FOCUS
Nordic competence
IM’s annual review ofwhat is new in
technologies andservices from thesmall but hugelyimportant region
the presentation of Atlas Copco’s new E Series
production (long-hole) drill rigs, which Global
Tunnelling and Mining Equipment Technical
Services Manager Patrik Ericsson said were
aimed at the Australian and Russian
markets, primarily, and particularly with
larger-diameter rock drills, with some
initial demand also anticipated in North
America.
The aim for the E7 C was to
automate the whole process
including drill positioning and bit
changing, with boom-mounted drilling. So
Atlas Copco had to come up with a stronger
boom with a different motion path, that was
more stable than previous booms. The BUT 45
was available already and is a well proven
system, so it was chosen. The heavy-duty BUT
45 boom, introduced in 2005, has been a
standard feature of the company’s Boomer
development drills and Boltec rigs for some
time. The Atlas Copco choice, besides the E7 C,
is now the Simba ME7 C (51-89 mm diameter
holes standard), E7 C-ITH (in-the-hole; 92-178
mm) and Simba W7 C (with Wassara water-
powered hammer). “The E7 is quite similar to
the ME7 but it can carry the heavy rock drills,
and when I say the heavy rock drills that means
the COP 36 to the COP 4050 – the really big
guns that we can offer,” Ericsson said.
“Atlas Copco has received plenty of
encouragement from Newcrest and others to
sink more money into new generation remote
control and automation technologies, and these
were also a feature of the Perth presentation
and will be front and centre in Las Vegas,”
HighGrade reported.
“If you look at the global picture there are a
few mines in the world that are using single
teleremote or multi-teleremote systems but for
sure, talking to customers at the global level
again, this is coming more and more,” Ericsson
said. “There are more and more requests to
operate the machines on a teleremote system,
so this is increasingly going to become a reality.
By using multi-teleremote you can have one
operator working with several machines.”
Atlas Copco’s Total Station Navigation (TSN)
system too is being used increasingly in mines,
as well as the more traditional civil tunnelling
applications. “It enables you to really position
the machine accurately in the tunnel and in the
mine’s coordinate system,” Ericsson said.
“During tests run here in Australia, and in Sweden,
and other markets also, if we implement ABC
[Advanced Boom Control] Total, the [automatic
drill] bit changer, and other intelligent functions
we see that in those cases that we increased the
productivity by some 20%,” Ericsson said.
Avoiding problems with stakeholders is an
increasing concern for responsible operations. A
management system now takes complete care
of all mining-related environmental concerns
such as noise, vibration and dust, allowing
operators to subscribe to an external company
that entirely takes care of their monitoring
requirements.
Results are displayed in a web-based control
application that shows current and upcoming
events, allowing real-time operational
management and fast decisions. A separate
public stakeholder web application allows
access to information such as current and
upcoming events, helping companies to reach
out and engage local communities.
By offering complete management, as
opposed to monitoring systems, subscribers can
optimise their operations around limits such as
daily noise allowances and ensure mining
output remains maximal while staying within
the limits. They can respond in real-time to
unplanned events by lowering emissions to
avoid stoppages, or increase operations where
extra scope is clearly visible within the limits.
Operators get the added bonus of having an
independent company in charge of measuring
their outputs, with that company – Brüel & Kjær
– representing, it says, “the highest level of
sound and vibration expertise available
worldwide.” Brüel & Kjær employees establish
and maintain the entire monitoring systems.
During the company’s long experience with
environmental management solutions, the key
to preventing and mitigating objections from
local residents has been
effectively and clearly
communicating – not
just conformance – but
also general
operational information
that helps include locals in
the information flow.
Companies adopting a
management solution
also find the process of obtaining mining
licences can be smoother, as a clear
commitment to stakeholder engagement helps
to make them more accepting at the beginning
of the process. In addition, it delivers a clear
benefit when it comes to repeat business, as
Brüel & Kjær’s Jan Hansen explains, “The
stakeholder web interface makes future
expansion much easier, as companies can refer
back to the successful mitigation in their
previous projects.”
Field tests of the new CJC™ Mobile Flushing
Unit (MFU) reveal how used gear oil turns
cleaner than new oil. C.C.JENSEN says “the CJC
MFU saves time and unexpected breakdowns,
and it is easy to operate.
“The MFU is a well-documented solution if
you want to ensure that trucks are constantly
operational, and the aim is to avoid unexpected
breakdowns and save frequent oil changes.
Various field tests, e.g. in the cold areas of
Canada, have proven, that the CJC MFU exceeds
expectations when it comes to quick and
effective filtration of thick gear oils – even at
very low temperatures.”
Over a period of months, the MFU has been
tested on wheel motors and differentials of, for
example, Komatsu and Caterpillar machines.
Within the time frame of planned service checks,
the oil has been cleaned to a contaminant level
below the specified cleanliness. In certain
46 International Mining | OCTOBER 2012
NORDIC FOCUS
The new Scooptram ST7 is a high performanceloader with a 6.8 t tramming capacity,articulated steering and oscillating rear axle. Ithas a comfortable and ISO FOPS/ROPS certifiedcab, a tramming height of 2,160 mm and awidth of 2,280 mm
Brüel & Kjær’s Mining Sentinel
gearboxes, with hundreds of litres of oil, the
task has been solved in very few hours.
Contamination removed from the oil could be
particles, water or oxidation products.
The principle of operation is to drain and
flush the oil in the gearbox through a hose. The
oil can temporarily be stored in a 280-litre tank
in the MFU itself, and be pumped from the tank
to the gearbox through special CJC Filter Inserts,
as many times as necessary. An oil preheater
ensures that the oil can circulate with maximum
speed, and a particle monitor gives the
possibility to stop the process when the desired
cleanliness level has been obtained.
Furthermore, the monitor measures and logs the
degree of cleanliness throughout the whole
filtration process.
Today, oil changes are still common, but to
drain a gearbox and fill it up with new oil is
actually very expensive, the company explains,
the problem is well known. It is difficult to
remove old oil and therefore the remaining
particles contaminate the new oil when it is put
in the tank. The result is unnecessary wear and
too high a risk of inconvenient and costly
breakdowns.
In an operating example, a CJC MFU was
installed on a Komatsu 930E truck wheel motor,
containing 100 litres of Mobil SHC 680 gear oil.
Oil analysis carried out before filtration and
flushing with the unit showed a very high level
of contamination – an ISO Cleanliness Code of
25/25/23. After only 90 minutes of filtration this
had been greatly improved to 16/15/11. As a result,
the company not only avoided an oil change, but
managed a very quick and easy service and
reduced the risk of a costly breakdown.
In the northwest of Norway the Norwegian
Public Roads Administration (NPRA) has just
completed a tunnel
investigation core
drilling program in
collaboration with
Devico. The coring was
for a subsea tunnelling
project that is planned
to connect multiple
islands north of
Ålesund to the
mainland.
Three boreholes of
between 450 and 550
m in length were
drilled along planned
tunnel trajectories. The
borehole paths were defined by NPRA and it was
up to the drilling contractor to follow these
paths. Norwegian Drilling used its Atlas Copco
U8 drill rig with N-size drill string.
As the boreholes had strict paths to follow,
which also included changes in inclination and
azimuth, directional core drilling was necessary.
The directional core drilling and surveying
technology, as well as service technicians were
supplied by Devico. Its technology has been
used in several geotechnical and mining
projects worldwide over the last 20 years, and,
the company says, “is the only commercial
technology providing core during the steering
process.”
The first borehole was
drilled over a two-month
period at the end of 2011
on a small unpopulated
island with harsh
weather conditions from
the Atlantic sea. The 500
m deep hole was started
with an inclination of -
25°, which it was to be
maintained until a depth
of 100 m. From there the
hole inclination was to
be -5° using a curvature
radius of 400 m
(approximately 0.15° per
meter drilled), and this
inclination was continued
to the end of the hole.
Due to natural
deviation lifting the
hole, the first
steering was
initiated at 150
m, and ended
two weeks later
at 290 m. As the
hole continued to
lift naturally a short
correction run was
performed at 400 m depth, and with this the
hole was successfully kept close to the initial
plan over its full length.
The second borehole was straight with only
minor changes in inclination. The main problems
were poor ground conditions and natural
deviation that pulled the hole upwards.
Cementation work and four directional
corrections were necessary to finish the hole
and keep it close to the planned trajectory.
The final, 450 m deep hole was finished over
one month following directly after the second
hole. With a start inclination of -20° the hole
was steered 15° to -5° over a stretch of 80 m.
The directional work took less than five shifts to
complete, achieving an average of over 15
m/shift. Two more corrections were performed
later on to control the strong natural deviation
tendencies occurring also in this hole.
The most popular of the Doofor-built rock drill
models has a successor. The DF530X hydraulic
rock drill represents new thinking in many
aspects, the company says. It is a high
frequency rock drill in the 10 kW power class
with a female hexagonal chuck. “By the help of
adjusting the valve movement and by
minimising the rock drill hydraulic fluid
dissipation, the economy can be improved up to
20%. With less need for hydraulic oil, the
operator can enjoy reduced fuel costs and lower
48 International Mining | OCTOBER 2012
NORDIC FOCUS
The CJC MFU is designed and tested to filtergear oils during the planned inspectionintervals and the filtered oil appears to be evencleaner than new oil. Therefore, many oilchanges can be avoided - a benefit to theenvironment and a great operating cost benefit
Thecoring project
involving Devicofinished on schedule in
late summer 2012. The threeholes drilled were all successfully
completed at acceptable distancefrom the required paths. With full core
recovery also during the steered sections,NPRA got the detailed geological information that
will be of significant value when estimating the costand process of the tunnel construction
50 International Mining | OCTOBER 2012
emissions. The new sealing solutions of the
piston [provide] longer the [seal] life and lessen
oil leaks.”
Separate lubrication of the flushing tube
minimises frictions inside the piston which
maximises the life of the piston and flushing
tube. Drill hole flushing in the DF530X can be by
air, water or air-water-mist.
This new hydraulic rock drill can better
withstand pressure variations in the hydraulic
system which leads to longer lives for seals and
body parts by dramatically reducing any
cavitation. With improved cast components and
sealing materials, the rock drill body is even
better sealed than before.
Doofor Product Designer Jaakko Hämäläinen
explains that this rock drill has gone through
tough tests in Finland, Brazil and China. He also
says it, “is economical and power efficient. We
can recycle 95% of the components, which
makes it a green product.”
FF-Automation has more than 30 years of
expertise in designing and manufacturing
advanced automation products. Many mines
uses its robust AutoLog® RTUs (Remote Terminal
Units) in applications where control of machines
underground or the transmission of data from
different locations to another is needed.
Security applications are also an important use
for RTUs because they give a good
solution for different applications to send
reports and alarms to a central control
room. FF-Automation’s RTUs can be also
remotely monitored and controlled by
its ControlMan Web-based Cloud
solution.
Flowrox (formerly Larox Flowsys) is
known for its environmentally friendly
and cost effective valve and pump solutions
for demanding process conditions. Constant
product development has generated the newest
innovation, the LPP-T100 hose pump. It can
pump a maximum flow of 100 m³/h at pressures
up to 10 bar. Using the unique Flowrox roller
design, the pump will deliver 31 litres per single
360o revolution and still only requires 25 litres
of lubricant, says Markus Rossi, Manager of
Hose Pump Technology at Flowrox. “We have
proven performance in the toughest
applications, handling heavy duty media
especially in mining, minerals and metallurgy.
Thickener underflow is an excellent application
for the LPP-T100 hose pump.”
With over 100,000 deliveries during over 30
years of experience in flow control technology,
Flowrox is well-known also for its heavy duty
pinch and knife gate valves as well as
progressive cavity pumps. Flowrox hose pumps
are ideal for pumping various slurries and
dosing a wide range of abrasive, corrosive,
viscous or crystallising media, says
Rossi. Flowrox hose pumps
incorporate an advanced
design, which eliminates
friction, maximises hose life
time and reduces energy
consumption, he continues.
They offer various process
benefits, such as:
Continuous flow rate 24/7
without overheating, resulting
in higher flow with a smaller pump
■ Accurate flow
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Fluid-Bag is a privately owned Finnish
company headquartered in Jakobstad. For the
past 30 years it has developed and
manufactured what it says is, “a unique range of
900 and 1,000 litre flexible one trip containers.”
“A Fluid-Bag is a flexible IBC for storage and
transportation of industrial volumes of liquids
and semi-solids. The plastic foils in contact with
a liquid can be altered, according to the type
and characteristics of a particular product. The
container is a sealed system avoiding air ingress
during filling or discharge, maximising product
protection against, amongst other things,
moisture, UV, air born bacteria and
contaminants. The Fluid-Bag ensures
consistency and cleanliness of product, reducing
down time and maintenance, especially
important where machinery is operated in harsh
mining environments.
South African based Engen Petroleum has
partnered with Fluid-Bag and been at the
forefront of introducing the systems in sub
Saharan Africa mining operations. Mining
companies and equipment operators have come
to value and take advantage of the benefits of
contaminant free greases and lubricants. Using
the flexibility of the Fluid-Bag, lubricant residues
are reduced to a minimum, and equally with
grease products as low as 0.5% when
discharged in conjunction with Fluid-Bag
handling equipment.
Fluid-Bags are today widely
transported by rail, by sea container and
have proven themselves for long and
short haulage under extreme conditions.
They weigh on average 70% less in
gross transport mass compared to most
drums. One is the equivalent of four
drums, reducing handling and disposal.
Important from an environmental perspective,
all components making up a Fluid-Bag are fully
recyclable. Handling of waste oil is increasingly
an environmental hazard especially in the early
phases of a mining operation. Some sites use
emptied Fluid-Bags for temporary waste storage
pending disposal via the correct authorities.
Used bags are foldable which allows scanning in
high security areas such as diamond mines.
The container is manufactured in accordance
with stringent standards – strength, inflation
and other tests set by the Swedish Test
Authority. Uniquely each and every Fluid-Bag is
pressure tested before delivery. Resistance of a
filled container to external influences is
extremely high – absorbing high levels of impact
if dropped or for example taking a direct hit from
a fork lift.
The Danish company, Fractum, offers, it says,
“a cost-effective solution for breaking oversize
rock. Its core product, the Fractum breaker, is
the biggest hammer in a world, capable of
breaking hard rock material, such as granite or
basalt boulders of more than 150 t.”
As the technology uses gravity to generate its
kinetic energy, the machine provides a highly
cost-competitive method of secondary breaking.
Essentially, the breaker consists of a steel tube,
700 mm in diameter and 8.25 m tall. Inside this
there is a steel-tipped weighted hammer and a
NORDIC FOCUS
OCTOBER 2012 | International Mining 51
Fluid-Bags are a preferred mini bulk solutionwhen starting up a mine or workshop +/- fourweeks combined with reduced capital andmaintenance costs. In many instances productsare dispensed directly into vehicles and otherequipment avoiding spills and others costsassociated with drums
MORE PRODUCTIVEwith the clever and simple Sleipner system.
THE EASIEST WAY TO BE
52 International Mining | OCTOBER 2012
coupler. In operation, the coupler is lowered
down the tube to engage with a fitting on the
upper surface of the hammer. A cable attached
to the coupler raises it up the tube, in turn lifting
the hammer. The bottom of the tube is placed on
top of the material to be broken and the
hammer is released. Gravity accelerates the
hammer downwards to break the target
material. The cycle takes on average 10 seconds.
The gravity-impact breaker needs to be
mounted on a
conventional
excavator of at least
40 t deadweight.
Having the breaker
mounted on an
excavator means that
the Fractum can be
rapidly deployed to
various areas of a
mine to carry out a
range of breaking
work. However, the
excavator is purely a
means of transport,
and the demands on
this machine are not
onerous. For this reason, a second-hand
excavator could be put to good use in this
application. While the tool is in use, the
excavator engine needs to operate at maximum
of a fast idle. Since the engine can operate
under low load the noise it generates is greatly
reduced.
The gravity-impact breaker offers a faster
solution to the problem of secondary blasting,
as it eliminates the need for time-consuming
drilling and charging of blastholes. It is also
safer than using other breakers or explosives.
The breaker hammer can be directed with great
accuracy and flying fragments from the impact
are safely contained within the breaker tube.
Fractum says “mechanically-complex
hydraulic breakers create both noise and, with
the need for repeated impacts, considerable
amount of dust. Flying fragments of material can
pose a risk to people and equipment in the
immediate vicinity.
“As a gravity-impact breaker uses far fewer
strikes than a hydraulic breaker to break the
same amount of material, there is less noise.
With smaller rocks, the gravity-impact breaker
can match the performance of a hydraulic
breaker. However, with larger rocks, the gravity-
impact breaker, with its greater impacts, easily
outpaces the performance of a hydraulic
breaker.
“When hydraulic breakers make a strike,
which encounters no resistance, these machines
can sustain damage. Mis-strikes pose no threat
to the Danish breaker. In fact, a major advantage
of the gravity-impact breaker is that it imposes
minimum strain on the excavator on which it is
mounted. The impacts transmitted from
hydraulic breakers, on the other hand, are
transmitted back to their carrier excavators, a
strain that shortens the lives of carriers
substantially.
“With fewer moving parts than a hydraulic
breaker, gravity-impact breakers offer longer
operating lives at a greatly reduced cost,”
Fractum claims. In Europe, it has been shown
NORDIC FOCUS
Fractum breakers are simple to maintain andinexpensive to operate. A reasonably skilledoperator can replace all common wearing partswhile the breaker is on site
www.coray.co
m
SOLUTIONS FOR TOUGH JOBS
www.normet.comwww.taminternational.com
that, if all costs are included, conventional
secondary breaking costs between €3.00 and
€7.00 per tonne. An efficient gravity-impact
breaker drops these costs to between €1.00 and
€1.50/t.”
Visitors to MINExpo were able to see what is
claimed to be “the world’s most powerful direct
drive.” The new Hägglunds CBM hydraulic motor
from Bosch Rexroth creates powerful
opportunities. Taking over from the tried-and-
true Hägglunds
Marathon motor, the Hägglunds CBM packs
50% more torque into a motor that is smaller
and up to 50% lighter than its predecessor.
“That gives it the world’s highest torque-to
weight ratio,” the company says.
For customers, the new motor opens up new
possibilities. The Hägglunds CBM not only
handles heavier workloads, but also takes up
less space and places less weight on the driven
shaft. This means that customer machines, and
in some cases the facilities that house them, can
be smaller, lighter and simpler. The motor’s
reduced installation requirements, combined
with the higher productivity it allows, can mean
lower overall investments and increased long-
term revenue. Added to this are the unique
operating advantages of a hydraulic direct drive:
full torque from zero speed, protection from
shock loads and four-quadrant operation.
The motor was developed in direct response
to customer requests. Greater power is
increasingly needed in many industries, and it is
a prerequisite for a number of new applications.
Based on the Hägglunds CB platform, the
Hägglunds CBM has internal advances that
allow it to supply 6000 Nm/bar of specific
torque. “The Hägglunds CBM satisfies the
toughest new demands on the market,” says
Lars Andrén, one of the key members of the
Hägglunds CBM development team.
“With its introduction, we can
provide the unique
advantages of a hydraulic
direct drive to a broader
range of applications than
ever before.”
Tested to meet high
expectations In replacing
a successful and trusted
motor like the Hägglunds
Marathon, Bosch Rexroth has
left nothing to chance. Many years
of R&D have gone into the Hägglunds CBM, as
well numerous hours of testing to verify
performance and quality. In fact, the Hägglunds
CBM is reported to have undergone more lab
testing than any other Hägglunds motor.
For those looking to upgrade from the
Hägglunds Marathon, direct retrofit kits are
available. These make exchanging the motor
both quick and simple in existing machines. All
customers, however, will benefit from the ease
of installing the Hägglunds CBM, since it has
splines that simplify attachment to the driven
shaft. (Shrinkdisc adapters are also available.)
At MINExpo last month, Komatsu KVX LLC
showed an 11 m3 rock loading bucket for 100 t
wheel loaders. It has supplied similar buckets in
North America, South America, Africa, Russia,
Europe and Australia. “Western Australia is a
very exciting region, and our market share here
is steadily increasing,” explains Managing
Director Carsten Bo Andersen.
KVX has gained worldwide
recognition for its highly wear
resistant bolt-on ground
engaging tool system for earth
moving machines and has
supplied the world market for
decades. “The foundation for KVX’s
strong position today is working
close with retailers, contractors, quarries
and mines. There has always been a tight
cooperation between KVX and some of our
customers in product development and testing
in order for us to help making their operation
profitable,” says Andersen.
Kopar’s particular expertise is in non-ferrous
smelters but its range of equipment also covers
many other applications and it has numerous
references in mining and metallurgy operations
worldwide. Kopar designs and manufactures
NORDIC FOCUS
OCTOBER 2012 | International Mining 53
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54 International Mining | OCTOBER 2012
rotary and steam dryers, converters, anode
furnaces, granulation plants, bucket elevators,
mechanical and pneumatic conveying systems,
and rotor and roller crushers. Kopar also offers
engineering and other services including pilot
tests, project management, erection, start-up,
training, modernisation, and spare and wear
parts.
A recent reference was the supply and
erection of a nickel slag handling system to
Boliden Harjavalta’s smelter, including a bucket
elevator, the respective elevator tower and a
new belt conveyor. Kopar also removed the old
equipment.
The bucket elevator is used for the
dewatering of nickel slag. It has a nominal
capacity to lift 110 m³/h of wet slag, about 20%
moisture. The length of the elevator is 14 m with
forged and hardened double drag chains in 216
mm pitches. The length of the belt conveyor is
36 m with a capacity to handle the same amount
of slag as the bucket elevator. In fact, the bucket
elevator replaced two older and shorter
elevators.
This recent delivery in May and June, 2012 did
not interfere with production, according to
Raimo Jortikka, Project Manager of Boliden
Harjavalta, as it was done during the annual
service period. The bucket elevator installation
took two weeks and the length of the service
period was five weeks.
In the past Kopar has
delivered various pieces of
equipment to Boliden
Harjavalta, including a
Peirce Smith converter for a
copper smelting line and
pneumatic conveying
systems for copper
concentrate.
Metso’s Mining and
Construction segment is
purchasing technology and know-how from
Jacobs Engineering Group for its Straight Grate
iron ore pelletising technology. Key Jacobs
technical staff related to the technology will
become Metso employees as part of the deal.
Iron ore pelletising is used to produce pellets
from concentrated iron ore for feed to blast
furnace and direct reduced iron plants. Metso
NORDIC FOCUS
The Kopar bucket elevator being lifted inHarjavalta for installation
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Metso Minerals recently launched thecomprehensive range of Opti-flo® screens andfeeders which the company says will offerreduced delivery times. Less components, leadto better serviceability and there is to beimproved availability of spare parts. Theseproducts are backed by the engineeringknowhow and experience of a worldwide screendesign team. The Opti-flo range consists ofbanana, inclined and horizontal screens as wellas feeders and grizzlies. It includes linear,circular and elliptical motion screens to suitmost applications
anticipates continued growth in this market as
more beneficiation and pelletising plants are
needed to maximise the output from lower
grade orebodies
Metso currently offers the Grate Kiln iron ore
pelletising system. With the purchase of the
Straight Grate technology from Jacobs, Metso
says it will become “the only supplier in the
world of both systems. Metso will be investing
in the on-going technical development of both
technologies.”
Metso and Jacobs have worked collaboratively
in the past with Metso supplying equipment for
Jacobs Straight Grate systems. The companies
anticipate that there will be the opportunity for
cooperation in the future in other areas.
Nokian Heavy Tyres is introducing the new
Nokian Mine King L-5S underground loader tyre
family which will replace the current Nokian
Mine L-5S products. Mine King’s are upgraded
to withstand heavier loads and give better
performance for the roughest conditions
underground. Excellent durability with steady
and robust carcass enables safe and fast
operation with great reliability and productivity.
The size range is from 12.00-20 up to 26.5-25
and will advance to 29.5-29 in the beginning of
2013.
These new tyres feature more layers to
enhance tyre safety in demanding applications.
The new carcass and bead materials allows an
increase of the
maximum inflation
pressure up to 8
bar (on 12.00-20
tyres up to 10 bar).
The higher load
capacity gives the
possibility of using
the tyres on more
efficient and
heavier machines.
In April 2010
Normet acquired
40% of the
construction
chemicals
manufacturer and
supplier, TAM International (TAM), to form a
global partnership. “Through careful, strategic
stewardship, TAM has since grown rapidly and
significantly in the underground mining sector,”
Normet says.
Based on this growth success, In June Normet
acquired the remaining 60% of TAM making it
now a wholly owned subsidiary of the Normet
Group. “Our 40% ownership in TAM was a
logical step forward in Normet’s quest to offer
the industry not only specialist equipment for
tough jobs, but a total solution offering that our
customers see real value in. This has already
proved successful in the areas of the world
where we have offered such solutions but now
with the complete acquisition of TAM, we can
really accelerate our ability to provide both new
and existing Normet customers around the
world entire process solutions that lowers their
risk and achieves a positive project outcome”,
says Aaro Cantell, Chairman of Normet Group.
“During the last two years of the
partnership, TAM has grown significantly and
now that it is fully integrated into Normet's own
construction chemical business line, it makes us
one of the leading specialist suppliers of
process solutions to the global underground
mining and tunnelling sector”, confirms Tom
Melbye, President of Normet Group and
Managing Director of Normet International.
“TAM’s experienced and competent personnel
and resources will only further strengthen
Normet's ability to be a reliable, long-term
partner for our customers in all different types
of projects and conditions including
underground, geotechnical engineering and
general construction projects. Our team is very
excited about the future!”
Moving forward, all TAM companies
worldwide will eventually operate under the
Normet company name, and TAM will be
retained as the product brand name for
construction chemical products.
Outotec recently signed a contract for a
turnkey project with Mexicana de Cobre to
There is a tread depthindicator on the newNokian Mine King L-5S underground tyresfor easy checking ofthe remaining tread
NORDIC FOCUS
OCTOBER 2012 | International Mining 55
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modernise La Caridad flash smelter at Sonora,
Mexico. The investment of this project is around
€30 million.
La Caridad copper smelter, built in the 1980s,
uses Outotec® Flash Smelting technology. The
scope of modernisation work includes refractory
demolition and equipment deliveries such as a
modern Outotec proprietary feeding system,
concentrate burner, furnace cooling system and
process control. Outotec will provide project and
construction management, commissioning and
start up supervision services. Once completed
during the last quarter of 2013 the modernised
smelter will be able to reach a higher production
capacity and energy-efficient metals recovery
without increasing emission levels.
"Mexicana de Cobre was convinced by
Outotec's capabilities regarding the renowned
Flash Smelting technology and our shutdown
expertise. We believe that with this
combination, supported by our local
knowledge and global resource
network, there are a various
opportunities for sustainable
smelter renovation and
modernisation jobs
around the world",
explains Outotec CEO
Pertti Korhonen.
Outotec has
expanded its grinding
mill product family
adding the Outotec
HIGmill™ (High Intensity
Grinding Mill) for fine, ultra-
fine and regrind milling
applications. This offers a
great advantage for
concentrators that are aiming
for improved grinding
efficiency or require
regrinding in their process.
HIGmill technology has
been developed and utilised
for more than 30 years. Today
there are more than 260
installed units around the world, with installed
mill power up to 5,000 kW. Outotec says
“HIGmills are so far the largest units in the
market place.”
Outotec brings this technology to the
minerals processing industry as more complex,
fine grained orebodies around the world
become economically viable. “Combining fine
grinding technology with flotation expertise and
particle size monitoring technology, Outotec
now provides a complete integrated offering for
new projects and value adding optimisation
solutions for existing installations.”
The HIGmill has the following advantages,
Outotec says:
■ High energy efficiency
■ High energy intensity and vertical orientation
■ Small footprint
■ Low wear rates and easy maintenance
■ Low operating cost, high availability
■ Large installed power base up to 5,000 kW
■ Open circuit: no classifiers, simpler process
All units are supplied with a variable speed
drive system which provides plant operators
optimum process and particle size control.
Robit Rocktools’ very specialised offering
consists of top hammer rock drilling tools and
overburden tools. Headquartered in Finland,
Robit is also present in more than 90 countries,
including a strong presence in Asia through its
manufacturing unit and distribution center in
South Korea YP Robit. Robit says it “will expand
its operations to 100 countries.”
Robit has always had as the priority to serve
locally its customers. In order to pursue this
philosophy, it says, “skilled personnel have
been hired and are now located closer to the
mining region. Simultaneously Robit is
developing special bit series to reinforce the
performance of its products in the demanding
northern conditions and support the mines to
take their drilling costs down.”
Ruukki is one of the world’s leading
producers of high-strength and wear-resistant
steel grades, including also engineering and
construction solutions, with operations in some
30 countries. Net sales in 2011 totalled €2.8
billion. Founded in 1961, Ruukki is a Finnish-
based steel producer with annual production
over 2 Mt of steel from its integrated steel mill
in Finland.
The range of special steel products includes
Ruukki Raex wear-resistant steels and Ruukki
Optim high-strength structural steels, with a full
offering of steel products extending from
standard to special-steel products. Ruukki’s
steel service centres also offer ready-bent, laser-
welded components, even processed into ready-
made parts or products. The company
NORDIC FOCUS
OCTOBER 2012 | International Mining 57
tel. +358 207 430 660, fax +358 207 430 661, www.oykatiab.com. +358 207 430 elt .ww660, fax +358 207 430 661, w om.ctiabayk.o
manufactures also heavy welded components
such as frames and booms as well as ready-to-
assemble operator cabins for mobile machines.
Ruukki works with its customers to help them
develop optimal end-products and to design
new applications for steel. Special steel
products translate into more value using less
material in customer applications. Special steel
customers include manufacturers
of mining equipment.
Ruukki is committed to continuously
improving the energy efficiency of its steel
production. Strong R&D capability enables
Ruukki to develop high quality products in
response to the market and various industries’
needs. The company ranks among most energy-
efficient in the world in iron-making and uses
nearly the minimum amount of coal raw
materials possible using current technology.
Some information on Sandvik’s new products
for MINExpo was given in our MINExpo review,
and more will be covered in detail next month.
To improve customer service, the group recently
entered into a five-year strategic agreement, to
a value of SEK2 billion, with the IT and
consulting company IBM and will outsource
parts of the IT infrastructure services. This is an
important step towards strengthening the
internal business solution for Sandvik IT and
also a vital part in its ambition to be a globally
integrated company.
The services in scope for this agreement are
'data centre services' and 'workplace'. The
former includes the operation of all server
platforms including hardware, application
platform software and facilities where servers
are placed. 'Workplace' includes all services to
manage Office PCs as well as messaging,
collaboration, standard applications and second
line user support. All tasks within 'workplace'
and 'data centre services' will be performed by
IBM.
Sandvik says it aims “to become a more fast-
paced, global and customer focused company
with greater synergies within IT and other
selected areas. This agreement will enable
scalability and flexibility in cost, resources and
competence for Sandvik. In the long term
perspective this will provide an increased cost
efficiency and quality of IT services and also
secure access to the right skills and
competence.”
H20 Maskinentreprenad owner Ulf Eriksson
recently took delivery of the very first Scania R
730 five-axle mining truck in Europe. The vehicle
will be primarily used in a mine in Kiruna,
Sweden, to haul tailings to a new tailings
management facility (TMF) after separation in
the dressing plant.
“The fact that I was bold enough to invest in a
truck for use in mining transport is probably
linked to the fact that I’m prepared to try out
new ideas to improve cost-efficiency in fuel
consumption,” says Eriksson. “Also, a truck that
only has a fraction of the emissions of
traditional mining trucks offers major
environmental benefits.”
Scania says the cost benefits that the five-
axle truck possesses are evident. “Tipper trucks
can admittedly be loaded with greater volumes
but they cost double the amount, use between a
quarter to a third more fuel and make for higher
insurance premiums and service costs.”
Eriksson estimates that he will save a great
deal of money each year on fuel alone.
“If everything goes to plan, the truck will pay
for itself within three years as I estimate that it’ll
be running for 20,000 hours over the space of
those three years,” he says.
The R 730 is untested in Europe, but in Brazil
around 150 vehicles are in use and two similar
vehicles with large tipper bodies are currently
being tried out in Indonesia. Another vehicle has
already been ordered for Gällivare, Sweden.
Before being delivered to Ulf Eriksson, the
vehicle was tested at the Gällivare mine.
“It worked extremely well, and we can see a
significant saving in fuel per tonne of material
transported,” says Daniel Karlsson, Regional
Manager at Scania Mining. “By letting people
put this vehicle through its paces, we believe
we’ll be able to sell more of them, both in
Sweden and around the world.”
The five-axle R 730 won’t replace the big
mining trucks, but it’s well-suited to
transporting medium-sized loads, especially on
slightly longer routes. Drivers can look forward
to a more comfortable working environment,
with the latest in cabin comfort.
The Swedish truck distributor Scania-
BilarSverige has started planning for its mining
projects in Sweden by setting up a special
warehouse in Södertälje that will guarantee
spare parts within 24 hours. “I’ll be in touch
with Ulf Eriksson at least once a week to see
how things are going,” says sales representative
Lars Bergvall at Scania dealer Müllers in Kiruna.
“We’re convinced this is going to be success and
will be keeping a close eye on the vehicle,” he
says.
NORDIC FOCUS
58 International Mining | OCTOBER 2012
Scania five-axle R 730 truck at Kiruna, alsoshown in article lead picture
OCTOBER 2012 | International Mining 59
NORDIC FOCUS
Sleipner is the manufacturer of specialty
equipment to move tracked excavators in open-
pit mines in a cost-efficient and effective way.
The system is based on a pair of heavy tyres and
the assistance of a hauling truck that can haul
the excavator above the ground fast and with no
wear to the machine’s tracks and undercarriage.
The Sleipner system has extended its range with
models to haul up to 550 t excavators.
The system is based on two pairs of axles and
heavy tyres with ramps. With the aid of the tyres
and the haul truck the excavator is easily moved
to the desired location. The move is
accomplished much quicker, with up to an 80%
reduction in the time to move machines.
There are further advantages, the prime one
being a considerable reduction to the wear of
the machine, since moving the machine off the
ground eliminates wear to the tracks and
undercarriage. With Sleipner, the lifetime of the
undercarriage is easily doubled or even tripled,
it claims. The system also makes the
maintenance and service easier and more cost-
efficient, since the machine can be moved fast
to the workshop avoiding servicing in the pit,
exposed to the elements.
Sleipner opened a new and modern facility in
Finland in 2011. There are currently 11 models in
the manufacturing program starting from E30 to
E550, the number indicating the weight of
excavator to be hauled. Most models also
incorporate different ramp sizes to fit almost all
existing excavator brands and models.
Tamtron Group has developed a robust and
reliable truck scale with various ways to transfer
data wirelessly and online. The scale consists of
two axle load cells replacing the rear pins, a
pressure transducer measuring the pressure in
the piston cylinder and an advanced display
instrument, designed for onboard use. The use
of both types of transducers ensures that the
weight result is correct in every position of the
platform. Weighing takes place simply by lifting
the platform. Inbuilt angle compensation means
the weighing is also accurate on uneven ground.
The DV scales can be installed for any off-road
truck, including underground haul trucks. The
scale is widely used on all truck models around
the world.
When the weighing is accomplished onboard
there is no need to take the load to a weigh-
bridge, which saves time. Export manager Kai
Ruuskanen says that with its DV scales, “you
can load impressive amounts of materials and
In total nine Sleipner sets of various sizes weredelivered to the Tuhup coal mine located in theprovince of Central Kalimantan in the south ofthe island of Borneo in Indonesia. The mine ismanaged by PT Asmin Koalindo Tuhup andproduces high-quality coking coal currently atthe rate of 5 Mt/y. The photo shows a KomatsuPC2000 excavator being hauled using aSleipner E190 and a Komatsu HD785 miningtruck
Tamtron scales are equipped with a large, cleardisplay – in 2012 the full-colour touch screenwas launched. Both the display and keyboardare illuminated, enabling round-the-clock use.The scale guides the user to work effectively byusing messages and audio signals. With propercharacter sizing the display is very convenientto read
still get very accurate weighing results. The
completed weighings are stored in the large
memory from where one can keep accurate
record of the material type and amount loaded
and location of the material. Tamtron DV scale
helps to avoid overloads which leads to more
efficient utilisation of the fleet and less need for
service.”
There are many DV scale models to choose
from. Even the basic models have many unique
standard features to meet customer
requirements. The scales can easily be
upgraded to more advanced data transfer
versions when the operation changes or more
online data is required. The most popular
wireless data transfer option is 300i with GPRS
data transfer through internet. With this model
data is accessed online wherever an internet
connection can be made. The system can be
supplemented with an advanced “i-Stock”
system in which one online is able to display the
material balance in various locations. All models
can be equipped with reliable thermal tape or
slip printers.
The Vacon® NXP has been updated to further
improve its performance, robustness, reliability
and market appeal. It is Vacon’s top of the range
product for all high power and high performance
products. The update involves improvements to
the complete product range, both the air-cooled
and liquid-cooled units. One of the most
significant concerns the control circuit boards,
which have been significantly redesigned and
uniformly varnished. Certain critical components
have been replaced in order to increase their
temperature sustainability. However, the range
of functionality and compatibility of the circuit
boards remain unchanged.
Varnished cards and option boards - which
are provided as standard in the power modules
above 72 A - improve protection against dust
and moisture. Performance and durability are
also enhanced by improved cooling channels for
optimal cooling and experience-based
optimisation of protection limits. In the air-
cooled NXP, new fans improve the reliability of
the drive, thus ensuring a longer life. Thanks to
the new cooling concept, fan efficiency has been
improved by more than 50%.
In the liquid-cooled high-power modules, new
options, such as an integrated brake chopper,
have been implemented to minimise cabinet
size and cost. Nickel plated heat sinks have
been developed to improve resistance against
aggressive liquids and corrosion.
The processor in the control card has also
been changed, boosting calculation power by
15%. This benefits especially OEM customers
who make their own software for applications.
“The Vacon NXP is a high-performance
product range, and with this update we have
further improved its performance, robustness
and reliability,” says Heikki Hiltunen, Executive
Vice President, Market Operations. “As a
dedicated AC drives company, we are committed
to pioneering trends in product design and
provide innovative solutions for demanding
industry applications and high power ranges.”
The Vacon Enhanced NXP is compatible with
the earlier versions of the NXP.
Fuel economy and
automation control of
various processes
support the use of
variable speed AC
drives in the highly
competitive mining
and minerals
processing sector.
Running AC motors
with variable speed
drives instead of
constant or fixed
speeds can save up to
50% in energy
consumption. Vacon
has one of the most
extensive product
portfolios in the
market and has
delivered thousands
of air- and liquid-
cooled AC drives to
customers across the
world.
Liquid-cooled
Vacon AC drives are
well suited for
locations where air
cooling would be
difficult, expensive or
impractical, or where space for installing the
drives is at a premium. Vacon’s liquid-cooled
units, which use normal drinking water as
coolant, have a very compact construction and a
low noise level since they require no large fans,
additional air conditioning or filtered ventilation
systems. A low noise level also means a better
working environment. Liquid cooling also
enables the use of cabinets with a high
protection class.
An additional benefit of these AC drives is
their heat loss transportation. The liquid-cooled
drives make it possible to transport heat losses
outside the electrical room and avoid the need
to use the surrounding air to ventilate the room
and cabinets.
Veekmas manufactures low-profile motor
graders for road maintenance in underground
hard rock mines worldwide.Their design and
product development is based on long
experience of manufacturing and developing
advanced motor graders with high level
ergonomics and operator friendliness. They are
also manufactured “with attention to high
performance and low operating costs.”
Pyhäsalmi in Finland, one of the mines
International Mining visits regularly (IM, April
2010, pp10-18) because it has a great reputation
around the world for underground mining
innovation and great use of technology, took
delivery of a Veekmas FG 7 C earlier this year
(pictured on the contents page of this issue).
This copper-zinc-pyrite mine has dozens of
kilometres of underground roads. “Veekmas FG
7 C is an operator friendly and strong enough
motor grader that has small turning radii”, says
Mine Manager Jouni Niemi. “Veekmas UG motor
graders have been originally designed for
underground mines, so they have small
dimensions and they turn fluently also in narrow
tunnels”, he continues. The FG 7 C is now the
only motor grader in the mine as the previous
Veekmas motor grader was 16 years old and it
was time to replace it. The mine did not even
think about considering another manufacturer.
“Veekmas is a well-known manufacturer and we
have good experience on Veekmas motor
graders”, says Niemi.
The main role of a motor grader in an
underground mine is for road maintenance. It is
essential that all underground roads are in good
condition because it improves efficiency,
enables traffic flow and lowers maintenance
costs of other vehicles. See also the Veekmas
section in September’s article on mining tyres
(p149).
The FG 7 C, like the one bought by Pyhäsalmi
is 2,460 mm high, has a maximum outside
turning radius of 4,450 mm without a front
blade, weighs 9.8 t and features a 90 kW
engine. The company has now added a new
model to the product line, the FG 3 C, which is
1,400 mm high, has a maximum outside turning
radius of 4,550 mm without a front blade,
weighs 8,700 kg and is powered by a 75 kW
engine.
In 2011, Volvo Penta was one of the first
diesel engine manufacturers to receive stage 3B
and Tier 4i certificates for its entire engine line-
up. For many years these engines have been
successfully proven for use in the demanding
underground mining segment. Now, the same
engines are also certified by MSHA and
CANMET.
Volvo Penta has received Mine Safety and
Health Administration (MSHA) as well as
CANMET-MMSL certification for its 13L interim
Tier 4 diesel engines. The 13L is the first engine
to receive the certification and there is more to
come.
The 257-405 kW, TAD1360/61/
62/63/64/65VE-series of diesel engines offers
NORDIC FOCUS
A major update hasbeen carried out onthe high-power, high-performance VaconNXP, which willmaintain its strongposition in Vacon’sportfolio in the highlycompetitive AC drivesmarket
NORDIC FOCUS
OCTOBER 2012 | International Mining 61
ventilation rates that are among the lowest in
the industry for the given power category, Volvo
Penta says. The ventilation rate is around 0.0189
m3/s/kW, which is considerably lower than
many other diesel engines used in mines today.
Looking forward, in 2014, manufacturers of
off-road original equipment will face the much
stricter Tier 4 Final/Stage 4 environmental
standards. This means a massive 80% reduction
of the NOx – from 2.0 g/kWh to 0.4 g/kWh.
Volvo Penta says it will be keeping it
simple for OEMs in regard to the re-
design of machines for installing
new engines and after-treatment
systems. Its range of engines
compliant with Tier 4 Interim/Stage 3B
is based on the Selective Catalytic
Reduction (SCR) technology. For
2014, it will meet the much more
stringent Tier 4 Final standards
using the same well-tested and
proven technology. A further
development of the SCR catalyst has
improved the NOx conversion to levels unheard
of just a few years ago. Adding a “light” EGR
system to the engines provides further emission
reduction and will at the same time help keep
the SCR catalyst operating at an optimal
temperature.
The innovative EGR system on the engines is
lightly cooled or not cooled at all. This serves
two purposes: First of all, it will not add extra
cooling requirements to the existing cooling
system. Secondly, it will not be subject to
exhaust gas condensation and thus the
potential
corrosion that can lead to
downtime.
By avoiding a costly Diesel Oxidation
Catalyst (DOC), installation is greatly simplified.
“This is probably the best EGR system in the
world”, says David Hanngren, Manager Product
Planning Industrial at Volvo Penta, and adds:
“With our new Tier 4 Final engine range, we will
also meet our customers’ primary objectives: no
re-generation, limited installation challenges,
continuous optimised fuel consumption and low
operating costs. With as few and as simple
changes as possible, we aim to make our
customers’ job as easy as possible.”
The SCR system is based
on high-efficiency
combustion
which reduces
the fuel
consumption
and results in
extremely low
levels of particulate
matter (PM), but also in
high NOx levels. Here,
the smartness of the
system is revealed: the
exhaust NOx is
converted into harmless
nitrogen gas and water
vapour. The SCR system
automatically injects up to 5%
AdBlue®, a diesel exhaust fluid,
to the exhaust gases. The gases are
then passed through a catalytic converter before
emission to the environment. The extremely low
levels of particulate matter in the emissions
also make exhaust gas filtration (DPF)
unnecessary. IM
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